Bathtub



FIG. 1 is a top plan view of a bathtub showing my new design;

FIG. 2 is an elevational view taken from one side thereof, the opposite side being a mirror image of the side shown;

FIG. 3 is a right end elevational view thereof;

FIG. 4 is a cross sectional view taken on line 4--4 of FIG. 2; and

FIG. 5 is a cross sectional view taken on line 5--5 of FIG. 1. 

The ornamental design for a bathtub, as shown and described. 